BR states that quantum theory raises doubts about the complete predictability of behaviour; but that does not confirm freedom of the will. The letter is reproduced in facsimile in The Exploration of Ideas: a Collection of Interviews and Dialogues conducted by Global Scholars on Religion, Mysticism, Literature, Culture, Aesthetics, Philosophy, Human Sciences with Allameh M.T. Ja'fari (2015), p. [468].

BR added the following postscript: "It is not certain that it will rain tomorrow, but this does not imply that it is certain it will not rain."

A typed carbon of this letter can be found at record 1679.